SOS Global I/O Detail

The Global I/O Detail Screen

The Global I/O Detail screen displays information about local and remote I/Os from a system- wide perspective.

Figure 15.1 SOS Global I/O Detail screen

To access the Global I/O Detail screen from any SOS display screen:

Type s from the SOS Enter command: prompt to view the Screen Selection Menu screen.

From the Screen Selection Menu screen, enter i (Global I/O Detail). The Global I/O Detail screen will display (refer to Figure 15.1).

Global I/O Detail Screen Display Items

GLOBAL I/O SUMMARY

The data items in the Global I/O Detail screen are described in the following table.

Table 15.1

Data Item			Description
Local	Logical	Reads	Total number of logical disk reads on the system (see "logical I/O").
		Writes	Total number of logical disk writes.
		Read/s	Logical reads per second.
		Write/s	Logical writes per second.
		Avg Read Size	Average size of logical reads in kilobytes (kb).
		Avg Write Size	Average size of logical writes (kb).
Local	Physical	Reads	Total number of physical disk reads on the system (see "physical I/O").
		Writes	Total number of physical writes on the system.
		Read/s	Physical reads per second.
		Write/s	Physical writes per second.
		Avg Read Size	Average size of physical reads (kb).
		Avg Write Size	Average size of physical writes (kb).
Local	User FS	Reads	Total number of user reads on the system (see "user I/O").
		Writes	Total number of user writes on the system.
		Read/s	User reads per second.
		Write/s	User writes per second.
		Avg Read Size	Average size of user reads (kb).
		Avg Write Size	Average size of user writes (kb).
Local	Sys FS	Reads	Total number of system reads on the system (see "system I/O").
		Writes	Total number of system writes on the system.
		Read/s	System reads per second.
		Write/s	System writes per second.
		Avg Read Size	Average size of system reads (kb).
		Avg Write Size	Average size of system writes (kb).
Local	Virt Mem	Reads	Total number of virtual memory reads on the system (see "virtual memory I/O").
		Writes	Total number of virtual memory writes on the system.
		Read/s	Virtual memory reads per second.
		Write/s	Virtual memory writes per second.
		Avg Read Size	Average size of virtual memory reads (kb).
		Avg Write Size	Average size of virtual memory writes (kb).
Local	Raw	Reads	Total number of raw memory reads on the system (see "raw I/O").
		Writes	Total number of raw memory writes on the system.
		Read/s	Raw memory reads per second.
		Write/s	Raw memory writes per second.
		Avg Read Size	Average size of raw memory reads (kb).
		Avg Write Size	Average size of raw memory writes (kb).
Remote	Logical	Reads	All NFS I/Os satisfied in a local buffer.
		Writes
		Read/s
		Write/s
		Avg Read Size
		Avg Write Size
Remote	Physical	Reads	All NFS I/Os that cannot be serviced. locally
		Writes
		Read/s
		Write/s
		Avg Read Size
		Avg Write Size

SOS GLOBAL I/O SUMMARY data items